200℃回火50SiMnVB钢Johnson-Cook本构方程的建立  

Establishing of Johnson-Cook Constitutive Equation for 50SiMnVB Steel Quenched on 860℃ and Tempered on 200℃

作　　者：刘盼萍[1] 常列珍[1] 张治民[2] 薛勇[2,3] 

机构地区：[1]中北大学理学院,山西太原030051 [2]中北大学材料科学与工程学院,山西太原030051 [3]北京航空航天大学机械工程及自动化学院,北京100083

出　　处：《锻压装备与制造技术》2008年第6期99-103,共5页China Metalforming Equipment & Manufacturing Technology

基　　金：国家自然科学基金资助项目(50575213);山西省青年科学基金资助项目(2007021026)

摘　　要：对200℃回火的50SiMnVB钢常温下的准静态和动态力学特性进行了测试,得出材料在不同应变率下的应力-应变曲线,根据Johnson-Cook模型,建立了200℃回火的50SiMnVB钢从准静态到动态较宽应变速率的物理本构方程。对比结果表明:所建立的本构方程和实验结果吻合的较好。The quasistatic and dynamic properties of 50SiMnVB under room temperature have been tested under treating of quenching on 860℃ and tempering on 200℃,and true stress strain curves at several strain rates have been obtained.According to the Johnson-Cook model,the physical constitutive equation for Tempered Steel 50SiMnVB has been established,which describes the character of 50SiMnVB changing from quasistatic to dynamic in a long range strain rates.The comparing result shows that the experiment fits the equati...

关 键 词：材料实验 回火 50SiMnVB 本构方程 力学测试 

分 类 号：TG161[金属学及工艺—热处理]